Remove edgetpu from the repo manifest

Getting the edgetpu package from coral-edgetpu repo

Change-Id: I2a91694cf69499de64795f10e6ddf9b261a5ee4c
diff --git a/columbia.xml b/columbia.xml
index 9375677..8f8a2c1 100644
--- a/columbia.xml
+++ b/columbia.xml
@@ -97,7 +97,6 @@
     <project path="bluez-imx" name="bluez-imx" />
     <project path="packages/bluez-imx" name="bluez-imx-debian" />
 
-    <project path="packages/edgetpu" name="edgetpu" />
     <project path="packages/edgetpuvision" name="edgetpuvision" />
     <project path="packages/edgetpudemo" name="edgetpudemo" />